'DeleteAllMessages' Adds a Delete All Option to the Messages Application
If you're one to have a lot of text message or iMessage conversations in your Messages application at once, then it can be cumbersome to go through and delete all of the conversations one by one.
A new free jailbreak tweak called DeleteAllMessages
by iOS developer Aaron Thomas adds a new "Delete All" button to the Messages application interface so that you can quickly and easily delete all of the text message and iMessage conversations from your Messages application at once.
When you tap on the Edit button in the Messages application, the new Delete All button shows up on the top right of the application, as shown above, along with the buttons for deleting the individual message conversations. As soon as you tap on the Delete All button, all of your messages in the Messages application will be deleted.
Notably, all of your conversations are deleted without a warning message, so there is always the small danger that you could tap it by mistake – you should exercise caution if you want to use this tweak. If you want to give it a try, it's available for free in Cydia's BigBoss repository right now. It has no options to configure.
iPhone 5 running iOS 7.0.4